| Red side-necked turtle | |
|---|---|
 | |
Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Testudines |
| Suborder: | Pleurodira |
| Family: | Chelidae |
| Subfamily: | Chelinae |
| Genus: | Rhinemys Wagler, 1830 |
| Species: | R. rufipes |
| Binomial name | |
| Rhinemys rufipes | |
 | |
| Range | |
| Synonyms[5][6][7] | |
Thered side-necked turtle (Rhinemys rufipes),red turtle,red-footed sideneck turtle,[1]William's toadhead turtle, orred-footed Amazon side-necked turtle[7] is amonotypic species ofturtle in the familyChelidae. It is found inBrazil,Colombia, and possiblyPeru.[7]
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This species is dimorphic in size meaning the sexes show different characteristics.[8] One study found that the largest female out of a group of 24 was 256 mm in carapace length. Out of that same group, the largest male was only 199 mm in carapace length.[8] A study focused on determining how these turtles acquire their sex discovered that it is not environmentally determined rather, it is a genetic sex determination.[9]
